Korn is a TDE mail checker that can display a small summary in the Kicker
tray. It supports checking mbox, pop3, imap4, and nntp sources.
Once mail is received you can have Korn run a third party program or change
the color/icon of the Kicker display. In addition to this you can have
Korn run a program once you click on the docked icon in Kicker.